نوع مقاله : کامل علمی - پژوهشی
نویسندگان
1 استادیار مؤسسه تحقیقات اصلاح و تهیه بذر چغندرقند، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.
2 موسسه علوم دامی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران
3 دانشیار، مؤسسه تحقیقات اصلاح و تهیه بذر چغندرقند، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.
4 استادیار مؤسسه تحقیقات اصلاح و تهیه بذر چغندرقند سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.
5 دانشیار مؤسسه تحقیقات اصلاح و تهیه بذر چغندرقند- سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران
6 کارشناس مؤسسه تحقیقات اصلاح و تهیه بذر چغندرقند- سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Fodder beet storage in the clamp is important in providing animal feed. The present study was conducted to evaluate the effect of cover type, spraying, and storage duration on the quality of fodder beet at Motahari Research Station in Karaj in two years of 2021 and 2022. The experiment was performed in split plot in time based on randomized complete block design with three replications. Fodder beet silo was formed every year next to the field from the beginning of November and was kept for five months. The main plots consisted of cover type in four types of 10 cm thick wheat stubble (a1), waterproof propylene cover with air permeability (a2), 10 cm thick wheat stubble together with waterproof propylene cover with air permeability (a3), and silo without cover (a4). Fodder beet roots were sprayed with 3% lime as sub-plots (b) in two levels of without spraying (b1) and spraying (b2), and storage duration (c) was performed for 150 days including five sampling treatments of 30 (c1), 60 (c2), 90 (c3), 120 (C4) and 150 (c5) days. The measurement of the minimum and maximum temperature of the environment and the silos was done by placing four thermometers in the center of the silos and one thermometer in the environment. Accumulation Degree Day (ADD), sucrose content, root dry matter, soluble amino acids, crude protein, marc and rot rate were among the qualitative indices that were measured during the storage period of fodder beet in silo. Results showed that in 2021 and 2022, the average total daily temperature of the environment during the five months of silos was 1019 and 993 oC, respectively, and the average total accumulation degree days of uncovered- and covered silos was 634 and 627 oC, respectively. The average score of infection and spoilage of fodder beet in silo with propylene covering for 150 days of storage was 1.35±0.25 from 9 which was significantly (P<0.05) lower than silo with stubble covering (1.68±0.16) and silo without cover (6.6±0.24). Spraying of lime juice caused a significant reduction of 200 g day-1 in the weight loss of fodder beet root in the silo. Considering the lack of significant difference between the dry matter of fodder beet in the silo and the total accumulation degree day of 398-425 oC and the spoilage and infection score of 1.68-1.35, the best storage period is recommended up to 120 days for areas similar to Karaj.
کلیدواژه‌ها [English]
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